Shock-loader.



T. MARTIN.

SHOCK LOADER.

APPLICATION HLED ocr. 15. 1914.

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SHOCK LOADER. APPLICATION FILED OCT. 15, 1914.

Patented Feb. 8, 1916.

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SHOCK LOADER.

APPLICATION FILED OCT. 15.1914.

Patented Feb. 8, 1916.

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,7 5) Hi3 ATTORNEYS 61% THOMAS MARTIN, OI MINNEAPOLIS, MINNESOTA.

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lowing to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

My invention has for its object to provide an improved shock loader, and to such ends, generally stated, the invention consists of the novel devices and combinations of devices l'iereinafter described and defined in the claims.

All of the parts of the shock loader are carried by a suitable truck. The truck frame is provided with a standard, on which is'an annular arm support. At the axis of the arm support is an upright operating shaft to which is attached one or more arms provided at their free ends with forks for picking up and delivering the shocks or bundles.

Preferably, there are several of theseforkequipped arms arranged to move, one ahead of the other, and to operate in succession. The annular arm support is non-rotary, and is preferably made up of two pivotally connected segments by adjustments of which the drop given to the forks in the pickingup action and the elevation given thereto, in the delivery action may be varied at will. The forks are arranged to be automatically operated, both in the picking-up and-in the discharging action, and each fork is preferably provided with an auxiliary fork or grapple.

In the accompanying drawings which illustrate the invention, like characters indicate like parts throughout the several views.

Referring to the drawlngs: Figure 1 is a plan view of the improved shock loader; Fig. 2 is a rear elevation of the same; Fig. 3 is a plan view showing the truck of the loader with some parts broken away and with some parts removed; Fig. 4 is a section taken approximately on the line as m on Fig. 1, with some parts broken away; and Fig. 5 is an elevation of the parts shown in Fig. 4, looking at the same in a direction from the left toward the right.

Specification of Letters Patent.

Application filed October 15, 1914. Serial No. 866,790.

Patented Feb. 8, 11916.

The truck shown, comprises a main truck frame 1, rear traction wheels 2, a pivoted front axle 3 and front wheels 4. The main truck frame 1 carries a trussed pedestal 5. J ournaled in suitable bearings on the frame 1 and pedestal 5 is an upright shaft 6, which, at its upper end, is provided with a head 7, and at its lower portion, with a beveled gear 8. The beveled gear 8 meshes with a pinion 9, loose on the rear end of a counter shaft 10, which, at its forward end, is provided with a rigidly secured beveled pinion 11. The pinion 9 is adapted to be connected to the shaft 10, at will, by a friction clutch 12 of well known, or any suitable construction.

The pinion 11 meshes with a beveled gear 13 of a differential gear mechanism 14: that connects the sections of a divided transverse shaft 15 mounted in suitable bearings on the frame 1. At its outer ends, the sectional counter-shaft 15 is provided with sprockets l6. Sprocket chains 17 run over the sprockets 16 and over sprockets 18 that are carried by the rear traction wheels 2. Connections for driving the upright shaft 6 from the rear traction wheels under advance movement of the truck, have now been described. The fork carrying arms 19, of which, as shown, there are two, are pivotally connected at 20 to the head 7 of the upright shaft 6, and they project in diametrically opposite directions therefrom. These arms 19 are long and must be very strong, and at the same time, should be quite light, and hence, are shown as reinforced by trusses 19 These arms 19 are supported on an annular track or runway made up of two semicircular segments 21, the ends of the said i track segments being pivotally connected to ing lock segments 28 secured on the pedes V tal 5.

ground, and which are secured to the lower horizontal portion of a rectangular frame 31, which frame, at both upper and lower portions, is rigidly secured to the swiveled column 29. A supplemental tined fork 32 is located over each main fork 30 with its back pivoted to the horizontal upper portion of the fork frame 31. The shaft or pivoted portion of each supplemental fork 32 is provided with a long depending arm 33, to the lower end of which is pivoted a latch 34. This latch 34 works through slots in the swiveled fork column 29, and is provided with a lower notch 35 and an n per notch 36. Normally, the lower note 35 engages with the edge of the lower back bar of the rectangular frame 31, as shown in Fig. 4, to lock the supplemental fork or grapple 32 in a raised position The depending end of the said latch 34 stands in position' to be engaged by a forwardly spring-pressed plunger 37 mounted on the frame 31, and provided with an extended head or plate 38 that is exposed directly over the tines of the fork 30. The upper notch 36 of the latch 35 is adapted to be engaged by the lower end of a latch retain ing bar 39, that is pivoted near its upper end tofa flange 40 that afi'ords a rigid connection between the swiveled column 29 and rectangular fork frame 31. The lower end of the latch retaining bar 39 is bent laterally at 39 to afford a lock that is engageable with the latch notch 36, under conditions hereinafter described. A light coiled spring 41 yieldingly draws the bar 39 toward the right, in respect to Fig. 5.

Normally, the swiveled fork columns ,29 and, correspondingly, the grapple forks are locked against rotation in respect to the arms 19 which carry them, and are held in position in respect thereto, required topick up the shock, by means of lock devices comprising lock bolts 42 mounted in bearings 43 on the heads 19 of said arms, and en-' gageable with radial bolt seats 44 formed in the upper end of the said column- 29 (see particularly Fig. 5 and also other views).-

There is, of course, a lock bolt for. each fork. Each lock bolt, as shown, is connected by a link 45 to a short lever 46 that is intermediately pivoted to the coiiperating arms 19 and has its lower end connected by a link 47 to a plunger 48, mounted to slide in suitable bearings 50 on the underside of said arm, and with its inner end arranged to be engaged with a tripping cam 51 secured on the central portion of the upper track segment 21. A coiled spring 52, shown as applied to the arm 19 and lever 46, yieldin'glyholds the lock bolt in an operative position.

The driving seat 53 is shownas suitably .lever 55 is connected by a rod 56 to a shipper lever 57 journaled to a suitable support on the truck frame l'and arranged to operate the clutch 12. As is evident, by manipulation of the lever 55 and clutch-12, the gears Band 9, which control rotation of the forkcarrying shaft or column 6, may be thrown into and out of action,-at will. Normally,

the forks and arms will stand as shown 1n Figs. 1 and 2, with one of the forks on the 1 ground in position to, pick up the shock and with the other fork. raised in a position to discharge or drop the shock. Under forward movement of the machine, the lowered fork will be caused to pick up the shock or bundles, and when the pressure by this action produced on the head 38 forces the same rearward, it will raise the lower end of the latch 34, and hence, permit thesupplemental fork 32 to drop .on top of the gathered shock. When the latch 34 is forced rearward, the notch 36 thereof, comes into alinementwith the, laterally-bent end 39 of the latch retaining bar 39, and the said end 39" then enters the said notch 36 and locks the segmental fork 32 down or into position to cotiperate with the main fork 32 to securely hold the gathered shock. When the shock has thus been gathered onto the fork, the driver or operator, by manipulation of the lever 55, operates. the clutch 12 and renders the driving mechanism operative to rotate the shaft 6 and head 7. When the said shaft and head have been given onehalf rotation, which serves to .carry the loaded fork to a raised position, and the raised fork back to a gathering position, the operator, by reverse manipulation of the lever 55, throws the said clutch 12 out of action, so as to leave the arms 19 standing in their new position.

When the arm 19 approximately reaches its extreme lupper posltion, as just stated, the inner end of the rod 48 comes into contact with the cam 51, and through the connections described, withdraws the lock bolt 42 from its seat 44 in the swiveled column 29 of the raised fork. When the lock bolt is thus withdrawn, the fork swings by gravity from its normal position at a right angle to the said arm 19, into a downturned position which is in the plane of thesaid arm. This downward swinging movement of the said fork causes the extreme up er end of the latch-retaining bar 39 to strike against j ments.

inmate the notch 36, of the latch 34. When thelatch is thus released, the supplemental fork 32 will be free to raise and will be caused to positively move back into the position shown in Fig. 4, with the said latch again secured as therein shown, by the downwardly crowding, discharging action of the bundles which then fall by gravity from the raised and opened fork.

' As the raised arm is moved downward, the fork swings by gravity, back toward its normal tical plane of said arm; and when it reaches this position, the lock bolt 42 again secures the same in that position, so that the fork is again adapted to pick up the next shock. Obviously, by adjustments of the lower section of the segmental-track 21, the downward movements of the arms and fork may be varied, while by adjustments of the other segmental sections of said track, the height to which the loaded fork will be raised may be varied.

The term fork is herein used in a broad and liberal sense and is intended as the mechanical equivalent of a scoop or shovel.

What I claim is:

1. In a shock loader, the combination with a support, of an upright power-driven shaft journaled thereon, an arm connected to said shaft for rotation therewith and for raising and lowering movements, of a fork pivotally connected to the free end of said arm for approximately horizontal swinging move- 2. In a shock loader, the combination with a truck, of an' upright power-driven shaft journaled thereon, an arm connected to said shaft for rotation therewith and for raising and lowerin movements, an endless track controlling t horizontal swin in position at a right angle to the .ver-

' horizontal swin e raising and lowering move-' and a fork pivoted to the arm,

movements. 3. In a shock oa er, the combination with a support, of an upright power-driven shaft journaled thereon, an arm connected-to said shaft for rotation therewith and for raising ments of said arm, free end of said for approm'mately and lowering movements, and main and supplemental forks pivoted to the free end of said arm for common approximately horizontal swinging movements, one of the said forks having, movement toward and from the other.

4. In a shock loader, the combination with a truck, of an upright power-driven shaft journaled thereon, an arm pivoted to said shaft but connected for rotation therewith, means for controlling the vertical movements of said arm when it is rotated with said shaft, cooperating main and supplemental forks pivotally mounted on the free end of said arm for common approximately 'ng movements, and means for moving sai supplemental fork toward and from said main fork.

5. In a shock loader, the combination with an upright power-driven shaft journaled thereon, an arm connected to said shaft for rotation therewith and for raising and lowering movements, a fork pivoted to the free end of said arm for approximately horizontal swinging movements, a lock normally holding sald fork against rotation, and means for releasin said lock.

In testimon in presence 0 whereo I afiix my signature two witnesses.

, THUS t I 

